Phthalocyanine

Phthalocyanine

Names
Other names Phthalocyanin Pigment Blue 16
Identifiers
CAS Number	574-93-6 Y
3D model (JSmol)	Interactive image
ChEBI	CHEBI:34921
ChemSpider	4445497 N
ECHA InfoCard	100.008.527
PubChem CID	5282330
UNII	V5PUF4VLGY Y
CompTox Dashboard (EPA)	DTXSID9025906
InChI InChI=1S/C32H18N8/c1-2-10-18-17(9-1)25-33-26(18)38-28-21-13-5-6-14-22(21)30(35-28)40-32-24-16-8-7-15-23(24)31(36-32)39-29-20-12-4-3-11-19(20)27(34-29)37-25/h1-16H,(H2,33,34,35,36,37,38,39,40) N Key: IEQIEDJGQAUEQZ-UHFFFAOYSA-N N InChI=1/C32H18N8/c1-2-10-18-17(9-1)25-33-26(18)38-28-21-13-5-6-14-22(21)30(35-28)40-32-24-16-8-7-15-23(24)31(36-32)39-29-20-12-4-3-11-19(20)27(34-29)37-25/h1-16H,(H2,33,34,35,36,37,38,39,40) Key: IEQIEDJGQAUEQZ-UHFFFAOYAC
SMILES C1=CC=C2C(=C1)C3=NC4=C5C=CC=CC5=C(N4)N=C6C7=CC=CC=C7C(=N6)N=C8C9=CC=CC=C9C(=N8)N=C2N3
Properties
Chemical formula	C32H18N8
Molar mass	514.552 g·mol−1
Hazards
GHS labelling:
Pictograms	[1]
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). N verify (what is YN ?) Infobox references

Phthalocyanine (H₂Pc) is a large, aromatic, macrocyclic, organic compound with the formula (C₈H₄N₂)₄H₂ and is of theoretical or specialized interest in chemical dyes and photoelectricity.

It is composed of four isoindole units^[a] linked by a ring of nitrogen atoms. (C₈H₄N₂)₄H₂ = H₂Pc has a two-dimensional geometry and a ring system consisting of 18 π-electrons. The extensive delocalization of the π-electrons affords the molecule useful properties, lending itself to applications in dyes and pigments. Metal complexes derived from Pc²⁻
, the conjugate base of H₂Pc, are valuable in catalysis, organic solar cells, and photodynamic therapy.

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